Apparatus for wireless telephony.



PATENTED DEC. 13

. S. MUSITS. APPARATUS FOR WIRELESS TELEPHONY.

AP LIGATION FILED 1107.24, 1902.

2 SHEETSSHEET 1.

N0 MODEL.

No. 777,216. PATENTED DEC. 13, 1904.

s. MUSITS. APPARATUS FOR WIRELESS TELEPHONY.

APPLICATION FILED NOV. 24, 1902. .m) MODEL. ZSHEETS-SHBET 2v wax (3 phone.

Unirrnn STATES Patented December 13, 1904:.

Pannier @rricn,

APPARATUS :FQR \llllidELh-iefifiis TELEPHGNYB SPECIFICATION forming part of Letters Patent No. 77?,216, dated December 13, 1904.

Application filed November 2* 1902. Eerie]. llo. 132,547. (No model.)

VVii-eless Telephony; and I do hereby declarethe following to be a full, clear, and-exact de- IO scription of the invention, such as will enable others skilled in the art to which it apperteins to make and use the same, referencebeing had to the accompanying drawings, and to characters of reference marked thereon, which form at part of this specification.

The present invention relates to improvements in devices or apparatus for electrically transmitting language, music, or signals over great distances without the use of connecting- 26 wires.

' in order to make the invention more read- 'iily understood, I will now describe it with ref- 'eren'ce to theaccompanying drawings, wherep 2 5 Figure 1 is a diag'rammatical representation of two identical stations A and B, both of which :may he used for sending and receiving mes sages. Fig. 2 is an enlarged front'elevation of a telephone in connection with a micro Fig; 3 is a vertical sectional View through Fig. 2. Fig. 4 is a top plan View of i a certain double Morse keye, hereinafter referred to; and Fig. 5 is aside view'of what is shown in Fig. t.

535 Each station consists of two circuits, the

microphone and the telephone circuits, and the microphone-circuit in turn has. two circuits, the primary and the secondary circuits.

A hollow body l, preferably cylindrical in 4 shape and oficopper or other suitable mate rial, which may or may not he filled with a current-generating liquid or electrolyte, is embedded into the ground and is connected by the line-wire 2 with the contact 3 of a double 45 key 4-, whose handle end is normally held up "the cattery 18.

the microphone 7. A-wire 8 then connects to a powerful source of electricity 9 and a wire 10 to one or more secondary coils 11, within which the primary coils are arranged in the manner usual with induction-coils. From the 5 5 secondary coils 11 a wire 12 is stretched to the telephone 13, interconnected with the micro phone *5, and the wire it connects the telephone with the metal cylinder 15, sunk into theground. The telephone litand microphone 0 assist each other when operating through the ei'i'ects of the vibration of the telephone diaphragm on the microphone membrane, whereby the microphone produces current impulse, which in its turn increases the vihra' 5 tion of the telephonememhrane. The described connections l ccil the secondary cir cuit. From the contact 16 oi the double any a wire 17 connects with a source of electricity 18, and thence a wire to aiswitch 29 with contacts 20 and 20'. This switch has as many contacts as there are microphones 22 22 out into the circuit 21. (in the drawings only two such microphones are shown, and come quently only two contacts.) The wire 2'1 then '7 5 is connected to the primary coils within the secondary coils 11. -A wire 23 then connects the primary coils with thecontact 24 of the double hey i. From contact 25 a Wire 26 stretches to the telephone 2?, and a wire 28 80 from the telephone to the grounded cylinder 15. These connections I call the primary circuit.

The operation of the apparatus is the following: H station A desires to call up station B, the switch 29 is laid on contact 20 or 20;, according" to whether the microphone 22 or 22' is used. it microphone 22 is to he. used, the contact is made at 20 and both keys of the double key 4 are depressed. The circuit is now closed as follows: ,The current flows from the source of electricity-l8 over linewire 19 to switch 29, contact 20, microphone 22, wire 21, to the primary induction-coils, thence by wire 23 to contact 24- of the double 9 key 4 to contact in and over the wire 17 to The current impulses genc'w ated by actuating the microphone 22 vwill induce in turn secondary currents in-the 00115 "H, 7 corresponding to the primary currents, which 1: i

will then travel'on the one hand over wire 12 to the telephone 1?), wire 14:, and to the grounded cylinder 15; on the other hand, over wire 10, battery 9, wire a, microphone 7, wire 1 6, to contact 5 of the double key -t, thence to f Contact 3, wire 2, and'to the embedded cylinder 1. The telephone 13, cut into this circuit, and the microphone 7 now serre as atransiator to enhance the current impulses. s From the cylinders 1 and 15 of' station A the current'imp'ulses will then travel through the con- 1 ducting medium (ground, water) to the corresponding cylinders l and 15 ollstatlon B.

Sincein this station the double key is not depressed, the current will How from eylinderl over wire 2 to contact 3 of double key 4. to contact 25, Wire 26, telephone 27, wires :48 and s 14 to cylinder 15, thereby closing the circuit between thetwo stations. If, however, station B desires to ta k to station A, the dou hle key 4c of station B must be depressed, the j switch 29 turned into the contact corrcspond- 1 ing to the microphone to be used, and the dei viees operate as above described.

it is evident that changes may be made in the interconnection of the various parts without stepping beyond the scope of the invention.

\ilmt I claim is 1. 1n apparatus for wireless telephony, a primary circuit, comprising a source of elec tricity and microphones cut into the said pri:

mary circuit, a secondary circuit, adapted to be influenced by the said primary circuit, a 1 telephone cut into the said secondary circuit, a microphone adapted to be actuated by said 1 telephone and metal cylinders in said secondary circuit, embedded in thcground, all substantially as and for the purpose set forth.

2. ln apparatus for wireless telephony, a primary circuit comprising a source of electricity, microphones, primary induction-coils and a double key, a secondary circuit, comprising a source of electricity, secondary induction-coils, adapted to be influenced by said primary induction-coils, a-telephonc, a microphone adapled to be, actuated by said telephone, a double key and metal cylinders en bcdded in the ground connected to the sec- 1 ondary line ends, substantially as and for the purpose set forth.

23. In apparatus for wireless telephony. a

primary circuit, comprisin a source of c1cc-' tricity, microphones, primary inductio'n-coils and a double key, a secondary circuit, comprising a source of electricity, secondary ii.

diu'tion-coils, adapted to be influenced by said primary iiulnetion-coils, a telephone, a microphone adapted to be actuated by said telephone, a double key and metal cylinders embedded in the ground and connected to the secondary line ends, and a telephone or telephones connected to the one grounded cylinder and to the said double key and through .said key, in its position of rest, to the other grounded metal cylinder, all substantially as and for the purpose set forth.

in testimony that I claim the foregoing I have hereunto set. my hand this 4th day of November, 1902.

SIGMUND MUSITS. Witnesses:

Fussy. Kerri-11:, Am'lcs'ro S. IlooUn. 

